Gas-burner.



. PATENTED AUG. 22, 1905. J. A. KIMMEL.

GAS BURNER. APPLICATION IILED APR. e. 1905 Frg. E.

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UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Aug. 22, 1905.

Application filed April 6, 1905. Serial No. 254,176.

To all whom, it may concern.-

Be it known that I, JOHN A. KIMMEL, a citizen of the United States,residing at St. Louis, State of Missouri, have invented certain new anduseful Improvements in Gas-Burners, of which the following is a full,clear, and exact description, reference being had to the aecom-- panyingdrawings, forming a part hereof.

My invention has relation to improvements in gas-burners forincandescent or VVelsbach lamps; and it consists in the novelconstruction of burner more fully set forth in the specification andpointed out in the claims.

In the drawings, Figure 1 is an elevation of an incandescent lamp havingmy invention applied thereto. Fig. 2 is a vertical section on line 2 2of Fig. 1. Fig. 3 is a horizontal section on line 3 3 of Fig. 1 lookingup. Fig. 4 is a vertical sectional detail of the gas-regulating valveand easing on the line 44 of Fig. 2. Fig. 5 is a horizontal section online 5 5 of Fig. 4, and Fig. 6 is a perspective detail of the neck ofthe miXing-cham ber.

The object of my invention is to construct a burner for incandescentlamps which will accurately control the admission of air and gas to theburner proper, one in which the flame will be unaffected by any unduedrafts of air, making the burner specially available for outdoor lamps,one which will effectively shut out any air-drafts tending to disturbthe incandescent mantle, one which will insure the delivery of apositive stream of gas to the burner, and one possessing further andother advantages better apparent from a detailed description of theinvention, which is as follows:

Referring to the drawings, P represents the gas-pipe, to which thevalve-casing 1 of the gasregulating valve 2 is secured. The upperreduced end of the casing 1 is provided with aseries of tapering ports3, converging toward the base of the central terminal conical stem 4,said stem controlling the discharge-orifice 5, leading from the conicalchamber 6 of the valve which receives said stem. The casingl is providedwith an intermediate screw'threaded portion 7, the diameter of whosecrosssection is slightly in excess of that of the milled based of thevalve 2, said portion 7 being adapted to receive the reduced neck orstem 8, depending from the base 9 of the conical mixing-chamber 10, thesaid neck being screwed down to and against the annular shoulder 11,formed at the base of the casing 1. In order to permit adjustment of thevalve 2 to and from the stem 4, (whereby the discharge of gas throughthe orifice 5 is accurately regulated,) suitable sections of the pe--ripheral wall of the neck 8 are removed, leaving openings 12 12 for thepassage of the milled base of the valve 2, making the latter accessibleto the thumb and forefinger of the operator, by which the regulation ofthe valve is most conveniently effected. The upper edge of each opening12 is provided with an inwardly-deflected lip 12, which serves to arrestthe valve and prevents its accidental unscrewing off the valve-casing.

The base 9 of the mixing-chamber 1O bulges inwardly, the parts 8, 9, and10 being spun from two pieces of metal. The inward bulge of the basebrings the air-openings 13, with which said base is provided, into aposition or plane above the lower edge of the mixingchamber-that is tosay, the lower edge of the mixing-chamber overhangs the air-openings 13leading thereto. The object of this construction is to place theseopenings well out of the influence of any draft, and thus avoid thedisturbance of the normal and uniform flow of the combustible mixture ofgas and air through the chamber. The openings 13 are regulated by therotatable air-gate 14, mounted loosely about the neck 8 of themixing-chamber, the upper milled edge of the gate being loosely crimpedover the folded edge formed between the chamber 10 and its base 9. Thegate is provided with openings 13, which may be brought to register withthe openings 13, thus freely admitting the full quantity of air into themixing-chamber, there to mix with the gas issuing from the orifice 5. Bygiving the gate 14 the necessary turn the admission of air into the mixing-chamber can be accurately adjusted.

Adapted to be coupled to the mixing-chamber is the base of theburner-tube 15, the latter being passed over the upper reduced end ofthe chamber and restingagainst the annular shoulder 16, formed at thebase of such reduced end. Flaring upwardly from the base of theburner-tube 15, and preferably crimped thereto, is a chimney-supportingshell or wall 17 of substantially similar contour with themixing-chamber 10, the two thus connected presenting an artisticappearance. The upper edge of the shell 17 is provided with an annularledge 18 for the support of a detachable ring 19, the ring being slippedover a series of spring lobes or arms 20, bounding the inner circle ofthe ledge. Disposed along the outer edge of the ring 19 are a series ofspring members or arms 21, serving to envelop the chimney C, the loweredge of the chimney resting on the inwardly-bent basal portions of themembers 21. The ring 19 is adapted to support a transparent (preferablyglass) annular shield or band 22, slipped over the lobes 20, this shieldpreventing any drafts or air-currents from impinging against theincandescent mantle M, suspended over the burner 15. Any currents thatmight strike the base of the chimney will be simply carried upwardbetween the chimney and shield 22 in a direction substantially parallelto the chimney-walls and leave the mantle undisturbed.

From the foregoing, therefore, it will be i seen that not only do I makenecessary provision against the impact of drafts of air upon the mantleand upon the uniform flow of the mixture passing through the mixing-chamber, but I provide the burner with a valve which can be adjusted withnicety, the whole forming a superior gas-burner construction. I may ofcourse depart in a measure from the details here shown without in anywise affecting the nature or spirit of my invention.

Having described my invention, what I claim is- 1. In a gas-burner, amixing-chamber having a base provided with air-openings, said openingsbeing disposed relatively above the lower edge of the chamber, a centralneck depending from the base, a gas-regulating valve secured to theneck, and an air-gate for controlling the openings leading to themixingchamber, substantially as set forth.

2. In a gas-burner, a conical mixing-chamber having a base removed asuitable distance from the lower edge of the cone toward the apexthereof, and provided with a series of airopenings, a central neckdepending from the base, avalve-casing adapted to couple to said neck,the latter having sections of its peripheral wall removed therefromleaving suitable openings, and a rotatable valve on the casing havingportions exposed through said openings whereby the same may be seizedand operated, substantially as set forth.

3. In a gas-burner, a suitable mixing-chamber, a neck depending from thebase thereof, the latter having a series of gate-controlled air-openingsdisposed around the neck and leading into the chamber, a valve-casinghaving an intermediate screw-threaded portion for coupling to the baseof the neck, an upper reduced screw-threaded portion terminating in aconical stem, the chamber of the valvecasing having a series of taperingports converging and discharging toward said conical stem, a valvemounted on the said reduced screw-threaded portion of the casing, andhaving a discharge-orifice controlled by said conical stem of thecasing, the depending neck of the mixing-chamber having sections of itswall removed to afford access to the valve whereby the latter may bemanipulated, substantially as set forth.

4. In a gas-burner, a mixing-chamber provided with air-openings at thebottom of the chamber, the lower edge of the Walls of the chamberoverhanging the bottom'and openings formed therein, substantially as setforth.

5. In a gas-burner, a suitable mixing-chamber having a burner-tubecoupled thereto and forming an extension thereof, an upwardlyflaringwall or shell carried by the burner, an annular ledge at the upper endof the shell, a ring resting on the ledge, a series of springarmsinclosing a chimney resting at the bases of the arms, a series of springlobes or arms disposed along the inner circle of the ledge, and anannular shield enveloping the lobes and resting on the ring,substantially as set forth.

6. In a gas-burner, a conical mixing-chamber having an inwardly-bulgingbase or bottom provided with air-openings, a central depending neckformed with the bottom, and an air-gate rotatable about the neck, andhaving its upper edge loosely crimped about the lower edge of theconical walls of the mixing-chamber, and freely rotatable about thesame, substantially as set forth. I

7. In a gas-burner, a mixing-chamber having a base provided withair-openings, a central neck depending from the base, a valvecasingcoupled to the neck, the latter having sectionsof its peripheral wallremoved therefrom leaving openings, a rotatable valve on the casinghaving portions exposed through said openings, the latter having upperinwardly-deflected lips for arresting the valve against accidentalunscrewing, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN A. KIMMEL.

WVitnesses:

EMIL STAREK, Jos. A. IVIIOHEL.

